Cushion for a breathing mask



FIG. 1 is a top and right front perspective view of a cushion for a breathing mask, showing our design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a cushion for a breathing mask, as shown. 